Ozone-generating unit and method of regulating the air gap therein



May 26, 1925. 1,539,419

W. KEISER OZONE GENERATING UNIT AND METHOD OF REGULATING THE AIR GAP THEREIN Filed Aug. 1923 CONDE/VGER ELECTRODES 0/54 EC TFf/C DISCHARGE EL 50 TRO E 2- Illlll i atented May 26, i925.

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SE1. LOUIS, MISSOURI, ASSIGNOR TO THE AIR CONDITIONING AND ENGINEERING 00-, OF S'L. LOUIS, MISSOURI.

OZONE-GENERATING UNIT AND METHOD OF BEGULA'BING THE AIR GAP 2 :1 I.

Applic'ation 'fil ed August 6, was. Serial No. emcee.

To all whom it may concern."

Be it known that I, WALTER KEISER, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented a new and'useful Ozone-Generating Unit and Method of Regulating the Air Gap Therein, of which the following is a specification. p

My invention relates to ozone generating devices and more particularly the open and air cooled type. The object of myinvention is to provide an ozone generating unit which is compactly constructed, selectively variable in capacity and also adapted to be comhined with other units of like size and construction in order to meet requirements in excess of the maximum capacity of the single unit. Another and further'object of my invention is 'to provide an ozone generating unit from which the heatv which is produced in the generation of ozone by electricity is quickly dissipated. Still further objects of my invention are to rovide an'ozone gener-- ating unit that may e readily cleaned While in operative position. without being taken apart, which is durable and'can be manufactured with a minimum expenditure of labor and materials. l

With these and other objects in View, I will now describe my invention, reference bein had to the accompanying drawings, in whidh: Y

Fig. 1 is a perspective View of my device with a portion of one of the side walls cut away to show in detail the construction of the ozone producing members; Fig. 2 is a top plan view-showing a modified form' for holding the electrodes in operative position; Fig. 3 is an end view; Fig. 4 shows a modified form of terminal connector; Fig. 5 is a view of combined units; and Fig. 6 1s a;-

iragmentary,-side view of a modified form of side-wall and dielectric. In my device I employ a grid form of discharge electrode which consists of a plurality of plates 6, spacers 7 and bolts 8. The plates and spacers have openings therein through which the bolts 8 are passed in order to hold the assembly together in compact form. A suficient number of thesebolts are used to prevent distortion of the grid when assembled and to keep the plates and spacers in electrical contact. These bolts may be used for electrical terminals, as shown in Figs. 3, 4 and 5.

The plates 6 are preferably of aluminum I or any metal adapted to resist the corrosive action of ozone and have discharge edges 6 which are preferabl continuous and unbroken, as shown in t e drawings. By pref- .erence the plates are relatively wide, thereby providing a means for quickly radiating any heat that may be generated while'ozone is being produced. While ll-have shown and preferto make these plates fiat, 1 do not wish to be limited thereto as it is'obvious that they can be madein various forms and shapes, as, for instance, corru ated, in order to furnish a greater radiating surface The spacers 7 are preferably cylindrical in form as thereby an undesirable leakagesand discharges whic might occur from sharp edges are reduced to a minimum and cleaning of the grid is thereby also facili-- tated. These spacers are of ample diameter to provide suitable sup ort for the plates,

construction permits easy assembly or dis-' assembly and facilitates the replacement oi any defective or undesirable part. I

As shown in the drawings, I provide dielectrics 9 of suitable' material, preferably mica or glass, positioned. adjacent discharging edges 6 of the plates and prevented from coming into contact with said ed 's by" means of strips of dielectric material 10. 5

Thesedielectrics 9are preferably flat sheets 4 substantially co-extensive with the adjacent condenser electrodes, 11 and are rovided with notches l1 engagin the insu ators 16" and 17 which prevent t e dielectric from 0' sli ping from the desired position or being unintentionally displaced. The strips 10 are also used to maintain an air gap between the discharge electrode and the ielectric, and

by changing the'thickness thereof and ad- 105 1usting the bolts -13 or springs 13 the air gap may beselectively varied. in order to prevent any discharge or leakage along these strips ,from the grid to the condenser electrode, I prefer that they do not extend 110 as Y beyond the outside plates of the discharge electrode, or, as shown in Fig. 6,1 may bend. back the electrode 11 away ,from the dielectric 10. v

11 are condenser electrodes, preferably formed of .noncorrosive'material, such as some suitable metal, and serve'as side walls for the ozone generating unit and as sup-" ports for the dielectrics. Reinforcingribs 12 may be formed on the outer face. By preference these ribs 12 are positioned so I that they will be at an angle to the trend of the discharge plates 6 as they thereby tend to prevent such accidental or unintentional alteration, variation or distortion inthe predetermined air gap as might occur if the lock nuts 14 are improperly'ad'jilsted or the stay bolts 13 improperly drawn up. The inner face of the condenser electrode 11 is in contact with the dielectric 9. 13 are stay bolts provided with lock nuts 14 and are used to assemble the condenser electrodes, adjust the distance between "them, and to provide the necessary pressure to retain the discharge electrode in operative position.- They also act asconductors between the condenser electrodes. By the use of.

these bolts, lock nuts and the strips 10, I can establish and maintain an air gap of any desired width. between the discharge electrode and the dielectric. 15 is a stay bolt which may be used as a terminal for connecting the plates '6 with a source of electrical energy and is preferably insulated from the electrode ll-by insulators'ld and '17. 16 and 17 are preierably shouldered insulators, the reduced portion of which projects through a suitable opening in the side wall. Theenlarged portion bears against the outer face of the'sidej'wall and is of suitable length and diameter"-'to,prevent flashing over between it and the nuts 18 and 19 when the bolt-15 is drawn up, The re-- duced portion or the insulator is-of suitable len h and diameter torevent fiashin over between the terminal 15'and the side wall,

20 is a stay bolt adapted to be USBKlBS a x terminal toconnect the condenmr' electrode 11 to a-source of electrical energy and thus complete the circuit between it and the terminal 15. 21 is a connector of any suitable conductive material between the terminal 15 and plates 6 and is preferably connected to 7 one of the bolts 8.

l have shown this in the form of a spring, but any suitable form. may be used and in Fig. 4: I show a modified form 21 which consists 01' a strip of metallic material, the ends of which are bolted to the terminals .8 and 15.

In Fig. 2 ll show springs 13*, which may beused instead of the stay bolts 13, shown in Fig. These springs are preferably used whemglass' is employed as a dielectric, as thereby elasticity is provided to. compensets for the expansion 0'2 the glass caused the other electrode. X

heat "produced the process of ozone generation. By using strips 10 of suitable thickness-I am able tovary'at will the distance between the electrodes 11 and regulate the tension of the springs 13?. 1

When several of mydevices' are combined,

as shown in Fig. .5, I prefer to use shouldered insulators 16 and 17' on only the two outer condensercelectrodes and to'use on indielectric and a separable support therefor term'e'diate condenser electrodes an insulator comprising an electrode, said support having an uninterrupted flat surface adjacent said dielectric. l

3. In an ozone generating'device, a flat dielectric and a removable support therefor comprising an electrode, said dielectric and said support having uninterrupted contact mg surfaces. c v

4.1m an ozone generating 'OleVlCB, electrodes, a dielectric and means-for maintain- .ing said dielectric in operative relation with said electrodes, which means comprise said elect fodes. I

5. An ozone generating device, comprising a discharge electrode, a -dielectric, a condenser electrode and meafisfor maintaining 1 said elements in operativerelation, which means comprisesone of the electrodes.

- 6. An ,ozone generating device comprising a discharge electrode, a dielectric, a condenser electrode and means for maintainingthe discharge electrode. in operative position, which means comprises the condenser electrode.- V

v 7. In an ozone'generating device, an'electrode, flat dielectrics d-isposedmn opposite sides ot said electrode in operative relation with edges of said electrode and detachable supports for said die-lectricswhich comprise 8, (In an ozone generating trode, flat. dielectrics oppositely disposed rela-v tive to send electrode'and in operative relation with edges of said electrode and mecha'nically and electrically connected supports for .said dielectrics, which supports comprise theother electrode.

9. In an ozone generating device, an elec-" trode, oppositely disposed dielectrics relative to Said electrode and in operative relation with edges of said electrode, supports e2 5 device, an electrode disposed between flat dielectrics and having edges opposed to the surfaces of the dielectrics, supports for said dielectrics, said supports being of conductive material, means for connecting said supports and formaintaining said electrode, dielectrics and Supports in operative relation-and for electrically connecting said supports to form the other electrode.

11. Anzozone generating device having an air gap between one electrode and the dielectrio and means for selectively varying said air gap. p

12. In an ozone generating device, oppositely disposed dielectrics relative to a discharge electrode and means for selectively trics. y

13. An ozone generating device comprisvarymg the distance between said dielecing a dielectric, a pair of electrodes and means for selectively varying the dISta IICB:

between the electrodes.

14. In an ozone generating device, a dis charge electrode andmeans for maintaining said electrode'in operativerelation with the 15. In an ozone generating device-,a fiat, detachabledielectric and means for retaining said dielectric inoperative position be- 'tween'the electrodes.

16. In an ozone generating device, a condenser electrode which comprises an outer wall forsaid device, means for stifienin said wall comprising a crib formed integra with said wall.

17. In an ozone generating device,'a dis-- charge electrode and a condenser electrode in operative relation therewith, a dielectric intermediate said electrodes facing and in intimate contact with the condenser electrode, an air gap between thedielectlfic and the discharge electrode, means for preventing distortion of said air gap which means comprises a rib in the condenser electrode positioned at an angle relative to the trend of the discharge electrode.

18. In an open ozone generating device, a pair of substantially flat electrically and mechanically connected side walls which comprise an electrode. J

19. In anopen ozone generating device, a pair of electrically and mechanically connected side walls having substantially flat surfaces opposed to each other, and a dielectrio and an electrode intermediate thereof.

20. In an open ozone-generating device, a pair of reinforced side walls adapted to form an electrode;

.21. In an ozone generating device, the combination of a pair of electrodes, one electrode comprising a plurality of separable spaced plates of conductive material which are electrically and mechanically connected, the other electrode comprising a plurality of separable plates of conductive material and means for mechanically and electrically con. necting said plates'and for maintaining said plates in spaced relation, said plates being reinforced and adapted toform side walls for the device, flat removable dielectrics, intermediate andsupported by said side walls and having one surface in contact with a surface of one electrode and another surface opposed to the edges of the plates of the other electrode, means for preventing the displacement of said-dielectrics, means for maintaining an air gap between said dielectrics and one electrode which means comprise strips of dielectric material intermediate said dielecgap between the dielectric and the electrode,

which means comprises said strip of dielectrio material interposed between the electrode and the dielectric and the adjustableelements which unite the side walls.

. WALTER KEISER.- 

